Product Description:

The SD-B3.031.030-14.000 is a rotary servo unit manufactured by Bosch Rexroth Indramat and placed within the SD Magnet Motors series. Designed for closed-loop motion control, it converts electrical power from a drive into precise rotary movement for positioning, indexing, and light feed applications in automated machinery. Its mechanical envelope follows standard square-flange conventions, enabling straightforward integration into packaging, assembly, and material-handling stations. This layout also helps the motor fit compact axis arrangements where repeatable starts, stops, and reversals are required.

With a mounting interface of 116 mm, the motor bolts directly to standard machinery frames and keeps alignment accurate under load. Its rotor contains ferrite magnets that establish the excitation field without external power, reducing heat generation compared with wound-field designs. A nominal speed of 3000 rpm matches many drive modules and supports predictable velocity control. At standstill, the electromagnetic circuit generates 3.1 Nm of holding torque, which suits small indexing tables and feed axes. Power is transmitted through a 19 x 40 mm shaft that fits common couplings while preserving torsional stiffness. The keyed shaft face is ground to ISO tolerance for secure torque transmission in couplings and pulley hubs.

As a brushless servo motor, commutation is handled electronically by the drive, so no mechanical brushes need replacement during normal service. The drive uses thermal models for this unit to monitor current and help protect the magnetic circuit from overheating during low-speed or standstill operation. Routine vibration monitoring further protects the magnetic circuit during repetitive duty cycles and helps maintain consistent running behavior over time. This operating approach supports stable response in applications that require frequent indexing moves and short settling times between motion steps on light-duty axes.